A method comprising: obtaining a plurality of three-dimensional (3D) point clouds about a plurality of objects of interest, each of said 3D point clouds being labelled to a category of objects of interest; rendering facades for the objects of interests categorized as buildings using an ambient occlusion method, where illumination of the point cloud is calculated based on light coming from a theoretical hemisphere or sphere around the object of interest; and rendering shapes of the objects of interests categorized as non-buildings by fitting predefined templates of street view objects to the point clouds labelled as non-buildings.